I have a 2005 F150 XLT 2wd. I had a Hypertech Max Energy Programmer on it and ever since I did Ive had nothing but problems out of my transmission. My truck is in the shop for the 3rd time in 6 months. The Hypertech burnt up my epc switch causing my transmission to have weird voltage and making it lose pressure burning my clutches up. I do not reccommend the Hypertech. I'm going to a custom tuned SCT from Troyer Performance to see if it still does it.